Abstract: The present invention relates to nucleated propylene-butylene copolymers comprising propylene and butylene monomer units, wherein the nucleated propylene-butylene copolymer has improved stiffness, better impact behaviour and optical properties such as low haze and improved optomechanical ability.

Abstract: The invention relates to storage-stable aqueous dispersions of hydrophilically modified polycarbodiimide resins, a method for producing same, and the use of a salt component to reduce carbodiimide hydrolysis in aqueous polycarbodiimide dispersions.

Abstract: The invention relates to a process and the product obtainable by the process for the preparation of an aqueous anionically stabilized polymer dispersion comprising a first emulsion polymerization of a first monomer mixture comprising acid functional monomers and substantially no amine functional monomers to form a the first phase oligomer, neutralising and a second emulsion polymerisation in the presence of the emulsion of the first phase of a second monomer mixture comprising amine functional monomers having sterically hindered secondary amine or tertiary amine groups and substantially no acid functional monomers to form a second phase of an amine functional polymer wherein the two phases are unmixed and separate. The invention further relates to the dispersions further comprising reactive and/or non-reactive co-binder, in particular polyepoxide co-binder and also relates to the use of the dispersions for preparation of coating compositions and coatings with anti-bleeding properties.

Abstract: Apparatuses and processes that produce multimodal polyolefins, and in particular, polyethylene resins, are disclosed herein. This is accomplished by using two reactors in series, where one of the reactors is a multi-zone circulating reactor that can circulate polyolefin particles through two polymerization zones optionally having two different flow regimes so that the final multimodal polyolefin has improved product properties and improved product homogeneity.

Abstract: Disclosed is a process for making a polyetheramine containing polyamide without excessive foaming in successive batches by providing a controlled heat input rate step for those batch runs that incorporate polyetheramine containing polyamide heel from previous runs.

Abstract: The present invention relates to an olefin polymerization process, wherein propylene and a C4 to C10 a-olefin, preferably 1-butene and optionally ethylene are reacted in the presence of a Ziegler-Natta catalyst so as to obtain a polypropylene, wherein the polypropylene comprises C4 to C10 a-olefin, preferably 1-butene-derived comonomer units in an amount of from 0.5 wt % to 15 wt % and ethylene-derived comonomer units in an amount of 0 wt % to 3 wt %, and wherein the Ziegler-Natta catalyst comprises i) an external donor of the formula (I): (R3)z(R2O)ySi(R1)x and ii) a solid Ziegler-Natta catalyst component being free of external carrier material.

Abstract: Systems and processes for rapidly depressurizing a reactor system are disclosed. The systems and processes are particularly useful in the high pressure polymerization of ethylene.

Abstract: The invention contemplates certain polyethers, polyether derivatives, and methods of making and using those same polymers. For example, the starting materials can, e.g., citronellol, prenol, isocitronellol and isoprenol.

Abstract: A film including 70 to 99 weight percent of an amorphous, high heat copolycarbonate having a glass transition temperature of at least 170° C., preferably 170 to 230° C., more preferably 175 to 200° C., and 1 to 30 weight percent of a cyclic olefin copolymer each based on the total weight of polymers in the film; wherein the film has a dielectric breakdown strength of greater than 700 Volts/micrometer, preferably 700 to 1250 Volts/micrometer at 150° C., is provided. Methods for the manufacture of the film and articles including the films are provided.

Abstract: To provide a fluorinated ether compound, a fluorinated ether composition and a coating liquid that are able to form a surface layer which is excellent in water/oil repellency, abrasion resistance, fingerprint stain removability, lubricity and outer appearance, and an article having such a surface layer. A fluorinated ether compound represented by A1-O—(Rf1O)m1-Q1-[C(O)N(R1)]p1—R11—C[—R12—SiR13n1X13-n1]3, wherein A1 is a C1-20 perfluoroalkyl group; Rf1 is a fluoroalkylene group having no branched structure; m1 is an integer from 2 to 210; Q1 is a single bond or a fluoroalkylene group having no branched structure; R1 is a hydrogen atom, etc.; p1 is 0 or 1; R11 is a single bond, an alkylene group, etc.; R12 is an alkylene group, etc.; R13 is a monovalent hydrocarbon group, etc.; X1 is a hydrolyzable group; and n1 is an integer of from 0 to 2.

Abstract: The invention is related to a class of hydrophilic copolymers comprising loosely dangling thiol-containing pendant groups. The hydrophilic copolymers are highly reactive towards azetidinium groups of an azetidinium-containing polymer upon heating and can find particular use in for producing water-soluble highly-branched hydrophilic polymeric material useful for producing water gradient contact lenses.

Abstract: The invention relates to a process and system for the continuous polymerization of one or more ?-olefin monomers comprising the steps of: a) introducing catalyst and/or polymer from at least one loop reactor to at least one second reactor b) withdrawing fluids from the at least one second reactor c) cooling fluids comprising the withdrawn fluids with a cooling unit d) introducing the cooled fluids to a separator to separate at least part of the liquid from these fluids to form a liquid phase and a gas/liquid phase e) introducing the gas/liquid phase below to the reactor below a distribution plate f) introducing the liquid phase to a settling tank to separate liquid from fines that settle down in the settling tank g) introducing liquid from the settling tank upstream of the cooling unit, h) introducing the slurry comprising solid polymer particles from the settling tank to the at least one loop reactor.

Abstract: The invention relates to a process for preparing a graft copolymer comprising polyethylene, comprising the steps of: A) providing an ethylene copolymer comprising side chains having C?C bond and B) reacting the ethylene copolymer of step A) with an azide compound in the presence of a catalyst, a free radical initiator or diphenylamine to obtain the graft copolymer, wherein the azide compound is an azide compound having a functional group or a polymer having an azide group.

Abstract: A rubber composition is, in particular, suitable for producing a sealing part for a high pressure hydrogen apparatus having excellent low temperature sealing properties and blister resistance, and the sealing part for a high pressure hydrogen apparatus is obtained by using the rubber composition. A rubber composition includes an ethylene/butene/ethylidene norbornene terpolymer (EBENB), and the rubber composition is for use in producing a sealing part for a high pressure hydrogen apparatus.

Abstract: Provided are a polymer ready for introduction into a kneading machine which is milled with good milling efficiency in a kneading machine and which provides a kneaded mixture with excellent filler dispersion, and a rubber composition and a pneumatic tire containing the polymer. The present invention relates to a polymer ready for introduction into a kneading machine, excluding natural rubber, the polymer having a temperature within the range of ?20° C. to 80° C. and satisfying the following formula (I): (Tip clearance d of kneading machine)3?(Volume V of polymer ready for introduction into kneading machine)?2.0×104 cm3??(I).

Abstract: The present invention discloses a preparation method of scribing rubber cement of a tire tread. The scribing rubber cement of the tire tread is prepared from the following raw materials in parts by weight: 100 parts of natural rubber; 3.5 to 4.5 parts of zinc oxide; 1.5 to 2.5 parts of stearic acid; 15 to 25 parts of titanium white; 2.5 to 3.5 parts of insoluble sulfur; 0.9 to 1.1 parts of accelerant DM; 0.9 to 1.1 parts of rosin; and 15 to 25 parts of color masterbatch. The preparation method of the scribing rubber cement comprises the following steps: step 1) preparing rubber compound; and step 2) preparing the scribing rubber cement. The scribing rubber cement of the tire tread prepared by the present invention has high aesthetic degree and does not influence the product quality.

Abstract: A hydrogenated copolymer comprising a copolymer block A comprising a vinyl aromatic compound monomer unit and a conjugated diene monomer unit, wherein a tan ? peak obtained by dynamic viscoelasticity measurement (1 Hz) is in the range of ?40° C. to 20° C., a value of the tan ? peak is 0.8 or more, and a half value width of the tan ? peak is 22° C. or less.

Abstract: The present invention relates to a method of producing biohydrocarbons which includes providing an isomeric raw material obtained from a bio-renewable feedstock, such as by deoxygenation, hydrodeoxygenation, hydrotreatment or hydrocracking, and containing at least 65 wt. % iso-paraffins, and thermally cracking the isomeric raw material to produce biohydrocarbons at a temperature (coil outlet temperature) of at most 825° C. The biohydrocarbons can further be polymerized to obtain bio-polymers such as polyolefins, polypropylene, polyethylene or copolymers such as polyethylene terephthalate.

Abstract: Provided is method of making a hollow polymer composition, comprising the steps of (a) providing an aqueous dispersion comprising (i) hollow polymer particles, wherein the hollow polymer particles comprise polymerized units of one or more multivinyl monomer, (ii) water, and (iii) one or more organic alcohol, and (b) removing water from the aqueous dispersion to form a dry composition comprising the hollow polymer particles and the alcohol, wherein either water is absent from the dry composition or else water is present in the dry composition in an amount such that the weight ratio of water to hollow polymer particles is 0.2:1 or less. Also provided are dry compositions that could be made by such a method, and non-aqueous dispersions of such dry compositions.

Abstract: The present invention relates to polyethylene resin having excellent impact strength, and more specifically, to polyethylene resin exhibiting excellent impact strength and flexural strength, when prepared into a molded product.